Bridge Site Selection & Guidelines

Guidelines for Bridge Site Selection

Bridge Site Selection & Guidelines SURVEY • Social Feasibility Survey and • Technical Survey Both surveys are of equal importance. The social feasibility survey establishes community ownership and responsibility, and the technical survey ensures that bridge construction is sound and safe. SOCIAL FEASIBILITY SURVEY Level of local participation • size of area of influence • … Read more Bridge Site Selection & Guidelines

Modulus of Elasticity and Poisson Ratio of concrete

Modulus of Elasticity and Poisson Ratio of Concrete (with example) Outline Find the modulus of Elasticity of concrete Find Poisson’s Ratio of Concrete Introduction Compressive Strength of Concrete –        Standardardized test of concrete  American Society for Testing and Materials (ASTM) –        Specifications include  Correct mix  Properly affixing strain gauges Properly capping the cylinder with sulfur … Read more Modulus of Elasticity and Poisson Ratio of concrete

Bridge Engineering – Classification of Bridges

components of bridge

Bridge Engineering – Components of Bridge Structures A bridge is a structure providing passage over an obstacle without closing the way beneath. The required passage may be for a road, a railway, pedestrians, a canal or a pipeline. The obstacle to be crossed may be a river, a road, railway or a valley.  Classification of … Read more Bridge Engineering – Classification of Bridges

Earthquakes

earthquake

Earthquakes Outline —  What is Earthquake —  Types of Seismic Waves —  Effects of Earthquakes —  Site Selection —  Building Construction Materials —  Building Planning | Earthquake Resistant Buildings —  Earthquake Resistant Techniques —  Summary and Conclusion What is Earthquake? Earthquake is a sudden tremor or movement of the earth’s crust, which originate naturally at … Read more Earthquakes

Inelastic Seismic Response of Structures

Non linear dynamic analysis

Inelastic Seismic Response of Structures Under relatively  strong  earthquakes, structures undergo inelastic  deformation  due to  current seismic design philosophy. Therefore, structures should have sufficient ductility  to deform beyond the yield limit.  For understanding the ductility demand imposed by the  earthquake,  a  study  of  an  SDOF system  in inelastic range is of great help. The  inelastic  … Read more Inelastic Seismic Response of Structures

Response Spectrum Method Of Analysis – with simplified examples

Response Spectrum Method of Analysis

Response Spectrum Method Of Analysis (Click here for Response SA in Staad Pro ) Introduction Response spectrum method is favoured by earthquake engineering community because of:  It provides a technique for performing an equivalent static lateral load analysis.  It allows a clear understanding of the contributions of different modes of vibration.  It offers a simplified … Read more Response Spectrum Method Of Analysis – with simplified examples

Pascal’s Triangle for determining the appropriate displacement field in finite element analysis

For the convergence of solution in finite element analysis, the assumed displacement field should be isotropic . This is achieved if the components of the displacement field are complete polynomials. This is achieved by using PASCAL’s TRIANGLE. It is a technique of including the appropriate number of terms in the displacement model. It also gives … Read more Pascal’s Triangle for determining the appropriate displacement field in finite element analysis

Bituminous Road Deterioration

Road Deterioration

Bituminous Road Deterioration Base Types Granular Base Asphalt Base Asphalt Pavement Base Stabilized Base Surface Types and Materials Asphalt Concrete Hot Rolled Modified Asphalt Rubberized Asphalt Polymer Asphalt Concrete Soft Bitumen Mix (Cold Mix) Porous Asphalt Stone Mastic Distress Modes Surfacing Distress Cracking Ravelling Potholing Edge-Break Deformation Distress Rutting Roughness Pavement Surface Texture Distress Texture … Read more Bituminous Road Deterioration

Shape functions for different elements used in finite element analysis

Shape functions or interpolation functions are functions used to represent behaviour of a field variable within an element. In finite element analysis we deal with different elements. The elements can be linear, quadratic, 8- noded, 9-noded etc. The shape function for these elements is required to be determined to draw a relationship between the nodal … Read more Shape functions for different elements used in finite element analysis